/Engine/Source/Runtime/Experimental/Iris/Core/Public/Iris/Serialization/NetBitStreamWriter.h
Commits a substream to this stream. Substreams that are overflown or do not belong to this stream will be ignored. If the substream is valid then this stream's bit position will be updated.CommitWrites()is not called by this method.
void CommitSubstream ( [FNetBitStreamWriter](API\Runtime\IrisCore\Iris\Serialization\FNetBitStreamWriter) & Substream )